The Siemens 3RN2013-1BW30 is a highly reliable thermistor motor protection relay designed to detect critical faults in motor windings such as wire breakage, short circuits, and insulation failures. It uses PTC thermistors embedded in the motor windings to provide accurate thermal feedback. When a fault is detected, the relay activates its two normally open (NO) contacts to trigger a safety response. Operating over a wide control voltage range of 24–240V AC/DC, it is ideal for industrial applications requiring enhanced motor diagnostics and protection. It features a compact design with DIN rail mounting for easy panel integration. ⚙️ Technical Specifications (EN): Part Number: 3RN2013-1BW30 Function: Fault detection for motor windings using PTC sensors Control Voltage: 24–240V AC/DC Sensor Type: PTC thermistors Output Contacts: 2 NO (normally open) Fault Detection: Winding disconnection, short circuit, insulation breakdown Mounting Type: DIN rail LED Indicators: Yes – for normal and fault status Application: Advanced motor protection in industrial automation Standards Compliance: IEC/EN 60947-5-1, IEC/EN 60947-8